took the tcp-test code and made a C2 server/beacon

sparse-c2/sparse-c2-messages/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "sparse-c2-messages"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+chrono = { version = "0.4.31", features = ["serde"] }
+serde = { version = "1.0.193", features = ["derive"] }

sparse-c2/sparse-c2-messages/src/lib.rs

@@ -0,0 +1,55 @@
+use std::net::Ipv4Addr;
+
+use chrono::prelude::*;
+use serde::{Deserialize, Serialize};
+
+pub const CONF_SEPARATOR: &'static [u8] = b"3ce6b7d3741941cbb88756c52ea8afdff45989fc440d47f295f77e068d3e19d4693c007b767b476cac7080c5cfb0bb63";
+pub const CLIENT_PORT: u16 = 2034;
+
+#[derive(Deserialize, Serialize, PartialEq, Eq, Clone)]
+pub struct BeaconId(pub String);
+
+#[derive(Deserialize, Serialize, PartialEq, Eq, Clone, Copy)]
+pub struct CommandId(pub u32);
+
+#[derive(Deserialize, Serialize)]
+pub struct BeaconOptions {
+    pub target_ip: Ipv4Addr,
+    pub target_port: u16,
+    pub source_ip: Ipv4Addr,
+    pub sleep_secs: u32,
+}
+
+#[derive(Deserialize, Serialize, Clone)]
+pub struct Command {
+    pub beacon_id: Option<BeaconId>,
+    pub command_id: CommandId,
+    pub command: String,
+}
+
+#[derive(Deserialize, Serialize, Clone)]
+pub struct BeaconInfo {
+    pub id: BeaconId,
+    pub port: u16,
+    pub last_connection: Option<DateTime<Utc>>,
+    pub done_commands: Vec<(CommandId, DateTime<Utc>)>,
+}
+
+#[derive(Deserialize, Serialize)]
+pub enum BeaconCommand {
+    Command(Command),
+    Noop,
+}
+
+#[derive(Deserialize, Serialize)]
+pub enum ClientCommand {
+    GetState,
+    ListenFor(String, u16),
+    Stop(String),
+    SendCommand(Option<BeaconId>, String),
+}
+
+#[derive(Deserialize, Serialize)]
+pub enum ClientResponse {
+    StateUpdate(Vec<BeaconInfo>, Vec<Command>),
+}